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Xylotrechus sp. ? - Xylotrechus undulatus

Xylotrechus sp. ? - Xylotrechus undulatus
Petit-Cap, Westmorland County, New Brunswick, Canada
June 30, 2012
Size: est. 15mm.
Found walking along high tide line of sand dune, 750 meters from the nearest tree. I keep coming back to Xylotrechus but may be way off base. Any help would be greatly appreciated. Species of Xylotrechus known from New Brunswick are a. annosus, colonus, integer, quadrimaculatus, s. sagittatus, and undulatus.

Images of this individual: tag all
Xylotrechus sp. ? - Xylotrechus undulatus Xylotrechus sp. ? - Xylotrechus undulatus

from Serge Laplante:
"The photographed specimen seems to be a specimen of Xylotrechus undulatus (Say). It is hard to give a positive identification from a photograph because Xylotrechus integer (Haldeman) is very close to X. undulatus. Xylotrechus integer would be more robust and have the lateral sides of the pronotal disc more heavily suffused with whitish to yellowish pubescence. It would help to see the pubescence pattern on the underside of the beetle to confirm the identification. Actually, DNA analysis would be useful to confirm that both forms are really two distinct species."

Moved from Xylotrechus integer.

Moved tentatively
Moved from Xylotrechus.

Doug Yanega says:
"Unless that happens to be a specimen of the western albonotatus that somehow got imported east, it's an integer with a rubbed prothorax. The elytra are certainly a match for some males of integer, especially the more northerly ones."

puzzling thing indeed. i want it to turn out integer...
...but don't have the guts -- or knowledge, for that matter -- to make the call :/
all the other mentioned spp. can be ruled out, i think.
will ask around.

Thanks so much, v!

anytime, Stuart.
the pleasure is literally all mine; just keep posting mystery bugs and watch yours truly solicit leading scholars for names

You may regret that! :)
-v-, you may regret making that suggestion. I have a rather large backlog of mystery bugs from New Brunswick just itching to be posted - heavy on the Syrphidae side! Thanks again.

it's all in the fineprint ))))))))))
the Mystery Bug Program is highly biased; it does not cover the vast majority of groups that frequent flowers or otherwise tend to live in the open, and also discriminates against large insects: they simply fall short of mystery :]
with some notable exceptions, it focuses on those you have to dig out from a substrate or move stuff to find, because chances to encounter the running or flying around are slim to nonexistent.
sorry to disappoint...
but bring it on nonetheless: we have several people around here who know the syrphids very well, and i'm sure you'll get names for your bugs.
i also believe resources like(1) may help you a lot figuring out your flies.

Party Pooper!
V, I was sure I had read the fine print for the MBP and it clearly stated that anything the photographer didn't recognize, or photographed so poorly that it was unrecognizable, qualified!

okay, let's have that pooped party, then!
just not under the MBP aegis, m'kaay? feel free to unload on BG whatever tantalizes you as a naturalist and human being, we'll try to process it as expediently as possible, subject to expert availability :)
i'll bring some decent vodka.

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